CN102579120A - Full built-in expandable anterior spinal fixation system - Google Patents
Full built-in expandable anterior spinal fixation system Download PDFInfo
- Publication number
- CN102579120A CN102579120A CN2012100413043A CN201210041304A CN102579120A CN 102579120 A CN102579120 A CN 102579120A CN 2012100413043 A CN2012100413043 A CN 2012100413043A CN 201210041304 A CN201210041304 A CN 201210041304A CN 102579120 A CN102579120 A CN 102579120A
- Authority
- CN
- China
- Prior art keywords
- expandable
- nail body
- screw thread
- bolt body
- afterbody
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a full built-in expandable anterior spinal fixation system, belongs to the field of medical appliances, and is applicable to an anterior spinal fixation operation. The full built-in inflatable anterior spinal fixation system consists of a connecting bar (1), a screw plug (2), an expandable bolt body (3) and an expandable element (4), and is characterized in that: the expandable element (4) is of a step rod shape, threads and an internal hexagonal hole are formed on the head part of the expandable element (4), and the other end of the expandable element (4) is of a conical shape; the expandable bolt body (3) is of a hollow structure and provided with inner threads, and threads and grooves are formed on the outer surface of the expandable bolt body (3); a U-shaped groove is formed on the tail part of the bolt body, and a hole is formed on the tail part of the bolt body. After a disease spine and adjacent spines are exposed, the expandable bolt body (3) is implanted, upper and lower intervertebral discs of the disease spine are cut and scraped with a curet; the expandable element (4) is screwed into to support the spinal gap, the connecting bar (1) is selected, a titanium mesh is cut, broken bones are implanted into the titanium mesh, and the titanium mesh is driven into the spinal gap, the connecting bar (1) is arranged, the screw plug (2) is tightened, and the long tail of the expandable bolt body (3) is broken, so that full built-in is realized.
Description
Technical field
The present invention relates to a kind of complete preceding road of built-in inflatable type spinal column inner fixer system, belong to medical instruments field, be applicable in the operation such as the preceding road of spinal column internal fixation.
Background technology
The anterior approach decompression is the common method that diseases such as treatment breast lumbar vertebra wound, tumor, infection cause spinal compression, needs the preceding road of row internal fixation stabilizing spine after the decompression.Early stage preceding road internal fixation exists that biomechanical property is not good enough, contour structures is owed rationally and problem such as technical operation difficulty.The research of path built-in thing had obtained develop rapidly before the breast lumbar vertebra in the last few years, it towards be fit to the human body normal anatomical structures, can bear the normal biomechanics load of spinal column, histocompatibility reaches minimizing well the direction of iconography influence improved.The preceding road of breast lumbar vertebra internal fixation roughly is divided into two types at present: one type is nail-stick system, is representative with Kaneda; One type is pegboard systems, is representative with Z-plate.But no matter be that nail-stick system or pegboard systems all can't satisfy clinical needs.
The preceding road of spinal column internal fixation is on the fifties is carried out the basis of spinal tuberculosis focal cleaning, anterior cervical vertebrae discectomy and interbody bone graft fusion, to grow up.Nineteen fifty-three Wenger uses preceding road approach to carry out apparatus to scoliosis first and fixes, and fixed method is to link one group of steel wire threaded bar in the vertebral body side with screw.The development of preceding road inner fixing device has been quickened in this proposition.The preceding road of multiple spinal column holder occurred since the sixties, trackside was prominent orthopedic before Australian Dwyer and Newton adopted the nail system of pulling to carry out, and this system is made up of cable wire and screw, and it provides limited stability through the pressurization between adjacent vertebral bodies.But its flexible cable wire can only be resisted tension force, and the elasticity of apparatus connection simultaneously is prone to cause the fracture of cable wire or screw again, and then causes pseudoarticulation formation.The seventies, Hall and Micheli and Zielke and Pellin improved this system; Made wirerope into rod iron; But this system be used for correcting and the spinal fixation side protruding, initial design can not resist that vertebral body cuts entirely or inferior cutting entirely and the pressure load that produces in spinal column the place ahead.Early stage in the eighties, the Dunn design is fixed to the last hypocentrum of hindering vertebra with screw, connects the preceding road of the breast lumbar vertebra fixed apparatus of screw up and down with threaded bar or steel plate, and it is short that it has sections, and bed knife is strong, can recover the stability in spinal column the place ahead immediately.The shortcoming of this apparatus is: design section has substituted the major part of spinal column, implants more forwardly, and this apparatus incisura is higher, contacts the large artery trunks in the place ahead easily, causes aneurysmal formation, and severe patient can cause death.This apparatus is superseded, but its design principle quoted by later apparatus, the design of apparatus was both focused on firm spinal stabilization can be provided, and can reduce apparatus again and expose the interference trunk.Nineteen eighty-three Kostuik develops the Kostuik-Harrington device according to the Harrington rod principle, but the incidence rate of problems such as postoperative metal inside-fixture fracture is higher.Kaneda inner fixing device by the golden Tian Qingzhi development of Hokkaido, Japan university in 1984 has been widely used in clinically at present, and has obtained gratifying effect.The appearance of Kaneda inner fixing device makes preceding road internal fixation get into the stage of a fast development, make preceding road inner fixer towards be fit to the human body normal anatomical structures, can bear the normal biomechanics load of spinal column, histocompatibility reaches minimizing well the direction of iconography influence improved.Along with the raising of iconography technology and the development of biomechanics, the preceding road of many breast lumbar vertebras internal fixation device has appearred in succession, and summarize and get up mainly to be divided into two kinds of structure types, promptly one type is nail-stick system, is representative with Kaneda; One type is pegboard systems, is representative with Z-plate.Nail-stick system such as the clinical practice of Kaneda system are extensive; Biomechanics is more stable, but this apparatus volume is relatively large, the inner matter incisura is higher, and report Kaneda system is arranged clinically, and friction causes the generation of tardy property aortic aneurysm to aorta; Though rare, in case it is very serious consequence to occur.The Z-plate system has solved the high problem of nail-stick system incisura to a certain extent; But the biomechanical stability of Z-plate is than nail-stick system difference, and plate and vertebral body side can't be docile fully, leave the space; Cause stress concentration in screw and plate locking place, internal fixation was lost efficacy; The design decision of same template it can not be adapted to the irregular patient of some vertebral bodys, can not carry out pre-bending according to demand in the art.No matter be pegboard systems or nail-stick system, because the restriction of psoas muscle or pelvic ring, the preceding road holder of using at present is generally limited to waist more than 3.
Summary of the invention
The present invention provides a kind of firm safe, easy and simple to handle, novel internal fixation system of meeting the preceding road of spinal column form anatomical structure that has.
Technical scheme of the present invention is following:
The complete preceding road of built-in inflatable type spinal column inner fixer system is made up of pitman (1), plug screw (2), expandable nail body (3), the core (4) that expands, and it is characterized in that: the core (4) that expands is shaft-like for step, and there is screw thread in a termination portion, interior hexagonal hole is arranged, and other end head is a taper; Expandable nail body (3) is a hollow structure, and step through-hole is arranged, and inside, aperture and afterbody have screw thread, and outer surface has screw thread, annular groove, and nail body tip evenly is divided into six lobes, the little duct that distributing on the lobe leaf, nail body afterbody has U type groove, and the afterbody outer surface has two symmetrical holes.
Core (4) end of thread that expands is connected with internal whorl place, expandable nail body (3) aperture, and interior hexagonal hole is arranged, and is convenient to apparatus and holds and get assembling, and conoid end can strut expandable nail body (4) tip lobe leaf, plays expansion.
Expandable nail body (3) outer surface has screw thread, adopts the screw thread design with higher hold, and screw thread edge is sharp keen, and the afterbody of nail body adopts existing pedicle nail screw thread design; Be convenient to the loading of pitman (1) on the one hand through long-tail, can realize that the long-tail part that fractures after finishing realizes the built-in entirely of vertebral body nail to the strutting and pressurizeing of vertebral body through long-tail on the other hand; Long-tail portion outer surface has two symmetrical holes, is convenient to apparatus and holds and get, and there is the aperture at nail body center, and the passage that is screwed into of the core (4) that expands; The aperture afterbody has screw thread, and the head in aperture has step, and when being screwed into bloated core (4), it struts through the lobe leaf of this step with expandable nail body (3); Realize the expansion function of expandable nail body (3), expandable nail body (3) long-tail portion screw thread is connected with plug screw (2), and internal whorl and bloated core (4) tailing screw flight lock each other, are convenient to control the degree of depth that is screwed into; During use, expandable nail body (3) is implanted vertebral body, the core (4) that will expand is screwed in the nail body opening road, and its machinery to nail body tip struts power; Make the tip become " pawl " shape to open, thereby reach the expansion purpose, six the lobe leaves in nail body tip all have the duct, and bloated core (4) is preceding to be implanted broken bone in the nail body central duct being screwed into; Be screwed into bloated core (4), the expansion of following closely the body front end has on the one hand increased the hold of following closely body and vertebral body, the interior on the other hand bone grafting of giving birth to; Several weeks or month surplus are integrated through slit and vertebral body between hole on the lobe leaf and lobe leaf after operation, reach strong internal fixation, and another part is simple circular rod; Implant near the vertebral body center, reduce the interference to surrounding tissue, such project organization is under the effect of the core (4) that expands; Six lobe leaves of expandable nail body (3) are strutted, thereby play the effect of " expand, explode ", with the phenomenon that prevents that screw from " returning pine "; Be particularly suitable for osteoporotic patient and go up use, expandable nail body (3) can be designed plurality of specifications, selects for use when supplying operation.
According to diagnosis vertebra diseases such as clinical sign and CT/MRI performances, implement fixing operation: after exposing disease vertebra and neighbouring vertebral body, hypocentrum is respectively implanted the vertebral body nail on sick vertebra, and every piece of vertebral body ailhead end exceeds offside cortex 1-2mm to guarantee two cortical fixation; Excise disease vertebra intervertebral disc up and down, decompression begins from the posterior angle earlier, and back 2/3 in the excision vertebral body forms a bone groove earlier; Keep one deck cortex reuse curet and strike off, expose dura mater, spinal cord is reduced pressure fully; In the broken bone expandable implant nail of part body (3) central duct, be screwed into bloated core (4), strut intervertebral space with dilator; Parallel until neighbouring soleplate, choose the pitman (1) of appropriate length, cut the titanium net of suitable length according to the interbody space of measuring; The broken bone of excision is implanted the titanium net, strut intervertebral space with dilator once more, the titanium net is driven into intervertebral space gently; Maintenance titanium net is inclined to one side slightly offside at the center of last hypocentrum hone lamella, and pitman (1) is installed, slightly behind the compression-expansion nail body (3); Last plug screw (2) and locking are followed closely long-tail with vertebral body then and are fractureed, and realize built-in entirely.
The complete preceding road of built-in inflatable type spinal column inner fixer system is according to the anatomical structure of compatriots T1～L5; Design; This internal fixation system had both overcome the deficiency of present pegboard systems and nail-stick system; Guaranteed the effectiveness of breast lumbar vertebra anterior approach, fixed and flexible is easy, has good potential applicability in clinical practice; Have the restriction that does not receive the vertebral body shape again, do not influence vertebral body soft tissue on every side, be fit to the human body normal anatomical structures; Can bear the normal biomechanics load of spinal column; Histocompatibility reaches the characteristics of minimizing to the iconography influence well, is specially: (1) is complete implants: be about to the vertebral body nail and almost all imbed in the vertebral body, expose vertebral body; This characteristic makes it in operation with after the operation, seldom stimulate blood vessel, nerve, soft tissue on every side; No matter also overcome simultaneously is pegboard systems or nail-stick system at present, because the restriction of psoas muscle or pelvic ring can only be applied to the deficiency of waist more than 3; (2) expansiveness: through the most advanced and sophisticated expansion of vertebral body, increased the hold of vertebral body on the one hand, also increased on the other hand and partly prevented revolving function, overcome the anti-shortcoming of revolving ability of single nail-stick system; (3) aperture on the vertebral body nail front end lobe leaf and the slit between the lobe leaf: UNICOM the inside and outside sclerotin of vertebral body nail, the broken bone in the vertebral body nail is fused with the outer sclerotin of nail, help sclerotin and grow into, reach real bone property fusion, avoid the internal fixation system failure; (4) independent research is used for the inner fixing device on the preceding road of breast lumbar vertebra, as homemade goods, can reduce patient's medical expense; (5) considering that titanium is nontoxic, light weight, intensity is high and have good biocompatibility, is very ideal medical metal material.Therefore, this inner fixer adopts current medical titanium alloy material commonly used.
The design of the novel complete preceding road of built-in inflatable type spinal column inner fixer system has feasibility in morphology; Each parameters of operating part has certain scope of choosing; Can rebuild the stability of breast lumbar vertebra; Be a kind of firm safe, easy and simple to handle, novel internal fixation system of meeting the preceding road of spinal column form anatomical structure, be suitable for the orthopaedics clinical application.
Description of drawings
Fig. 1 is the complete preceding road of a built-in inflatable type spinal column of the present invention inner fixer system construction drawing.
Fig. 2 is pitman of the present invention (a 1) structure chart.
Fig. 3 is plug screw of the present invention (a 2) structure chart.
Fig. 4 is expandable nail body of the present invention (a 3) structure chart.
Fig. 5 is bloated core of the present invention (a 4) structure chart.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
The complete preceding road of built-in inflatable type spinal column inner fixer system is made up of pitman (1), plug screw (2), expandable nail body (3), the core (4) that expands, and it is characterized in that: the core (4) that expands is shaft-like for step, and there is screw thread in a termination portion, interior hexagonal hole is arranged, and other end head is a taper; Expandable nail body (3) is a hollow structure, and step through-hole is arranged, and inside, aperture and afterbody have screw thread, and outer surface has screw thread, annular groove, and nail body tip evenly is divided into six lobes, the little duct that distributing on the lobe leaf, nail body afterbody has U type groove, and the afterbody outer surface has two symmetrical holes.After at first exposing disease vertebra and neighbouring vertebral body, each expandable implant nail body (3) of hypocentrum on sick vertebra, every piece of nail body head end exceeds offside cortex 1-2mm to guarantee two cortical fixation, excises disease vertebra intervertebral disc up and down; Strike off with curet, expose dura mater, spinal cord is reduced pressure fully, in the broken bone expandable implant nail of part body (3) central duct; Be screwed into bloated core (3), strut intervertebral space with dilator, parallel until neighbouring soleplate, choose the pitman (1) of appropriate length; Cut the titanium net of suitable length according to the interbody space of measuring, the broken bone of excision is implanted the titanium net, strut intervertebral space with dilator once more, the titanium net is driven into intervertebral space gently; Keep the titanium net at the center of last hypocentrum hone lamella offside slightly partially, pitman (1) is installed, after compressing vertebral body slightly and following closely; Last plug screw (2) and locking fracture expandable nail body (3) long-tail, realize built-in entirely.
Claims (2)
1. the complete preceding road of built-in inflatable type spinal column inner fixer system is made up of pitman (1), plug screw (2), expandable nail body (3), the core (4) that expands; It is characterized in that: the core (4) that expands is shaft-like for step; There is screw thread in one termination portion, interior hexagonal hole is arranged, and other end head is a taper; Expandable nail body (3) is a hollow structure, and step through-hole is arranged, and inside, aperture and afterbody have screw thread, and outer surface has screw thread, annular groove, and nail body tip evenly is divided into six lobes, the little duct that distributing on the lobe leaf, nail body afterbody has U type groove, and the afterbody outer surface has two symmetrical holes.
2. the complete preceding road of built-in inflatable type spinal column inner fixer system according to claim 1 is characterized in that described expandable nail body (3) adopts screw thread design; Screw thread edge is sharp keen, and the afterbody of nail body adopts existing pedicle nail screw thread design, and there is the aperture at nail body center; The aperture afterbody has screw thread; The head in aperture has step, and expandable nail body (3) can be designed plurality of specifications, selects for use when supplying operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100413043A CN102579120A (en) | 2012-02-23 | 2012-02-23 | Full built-in expandable anterior spinal fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100413043A CN102579120A (en) | 2012-02-23 | 2012-02-23 | Full built-in expandable anterior spinal fixation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102579120A true CN102579120A (en) | 2012-07-18 |
Family
ID=46468750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100413043A Pending CN102579120A (en) | 2012-02-23 | 2012-02-23 | Full built-in expandable anterior spinal fixation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102579120A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2512063A (en) * | 2013-03-18 | 2014-09-24 | Fitzbionics Ltd | Spinal implant assembly |
| CN106618706A (en) * | 2017-03-01 | 2017-05-10 | 南方医科大学珠江医院 | All-built-in expandable biocoating spine anterior internal fixation system |
| CN106994038A (en) * | 2017-05-23 | 2017-08-01 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind remedies fixing device for vertebral arch pedicle of vertebral column broken wall |
| CN107115140A (en) * | 2017-05-23 | 2017-09-01 | 温州医科大学附属第二医院温州医科大学附属育英儿童医院 | One kind is used for backbone and strengthens pedicle screw internal fixation device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276086A (en) * | 2000-04-04 | 2001-10-09 | Mizuho Co Ltd | Bone fixing tool |
| CN2486118Y (en) * | 2001-07-25 | 2002-04-17 | 史亚民 | U shape pediculus arcus vertebrae nail hook device |
| CN2910138Y (en) * | 2006-05-18 | 2007-06-13 | 雷伟 | Universal expanding screw for pedicle of vertebral arch |
| WO2008146981A1 (en) * | 2007-05-31 | 2008-12-04 | Gs Medical Co., Ltd. | A spinal screw module |
| US20100094349A1 (en) * | 2004-08-27 | 2010-04-15 | Michael Hammer | Multi-Axial Connection System |
| CN202446235U (en) * | 2012-02-23 | 2012-09-26 | 北京市富乐科技开发有限公司 | Spinal anterior inside holder system in an all built-in expandable type |
-
2012
- 2012-02-23 CN CN2012100413043A patent/CN102579120A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276086A (en) * | 2000-04-04 | 2001-10-09 | Mizuho Co Ltd | Bone fixing tool |
| CN2486118Y (en) * | 2001-07-25 | 2002-04-17 | 史亚民 | U shape pediculus arcus vertebrae nail hook device |
| US20100094349A1 (en) * | 2004-08-27 | 2010-04-15 | Michael Hammer | Multi-Axial Connection System |
| CN2910138Y (en) * | 2006-05-18 | 2007-06-13 | 雷伟 | Universal expanding screw for pedicle of vertebral arch |
| WO2008146981A1 (en) * | 2007-05-31 | 2008-12-04 | Gs Medical Co., Ltd. | A spinal screw module |
| CN202446235U (en) * | 2012-02-23 | 2012-09-26 | 北京市富乐科技开发有限公司 | Spinal anterior inside holder system in an all built-in expandable type |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2512063A (en) * | 2013-03-18 | 2014-09-24 | Fitzbionics Ltd | Spinal implant assembly |
| US10245076B2 (en) | 2013-03-18 | 2019-04-02 | Fitzbionics Limited | Method of installing a spinal implant assembly |
| GB2512063B (en) * | 2013-03-18 | 2019-05-29 | Fitzbionics Ltd | Spinal implant assembly |
| CN106618706A (en) * | 2017-03-01 | 2017-05-10 | 南方医科大学珠江医院 | All-built-in expandable biocoating spine anterior internal fixation system |
| CN106618706B (en) * | 2017-03-01 | 2023-10-20 | 南方医科大学珠江医院 | Full-built-in expandable biological coating anterior spinal fixation system |
| CN106994038A (en) * | 2017-05-23 | 2017-08-01 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind remedies fixing device for vertebral arch pedicle of vertebral column broken wall |
| CN107115140A (en) * | 2017-05-23 | 2017-09-01 | 温州医科大学附属第二医院温州医科大学附属育英儿童医院 | One kind is used for backbone and strengthens pedicle screw internal fixation device |
| CN107115140B (en) * | 2017-05-23 | 2024-01-02 | 温州医科大学附属第二医院温州医科大学附属育英儿童医院 | Internal fixing device for spinal column reinforced pedicle screw |
| CN106994038B (en) * | 2017-05-23 | 2024-03-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Be used for broken wall of backbone pedicle of vertebral arch to remedy fixing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201612682U (en) | Posterior lumbar interbody fusion device | |
| JP2022520101A (en) | Implants for spinal fixation and / or fusion | |
| JP2003518409A (en) | Intervertebral cage and method of use | |
| CN202446235U (en) | Spinal anterior inside holder system in an all built-in expandable type | |
| CN108742953A (en) | A kind of minimally invasive double cortex centrum screw self-stabilization type " ear " type lumbar intervertebral fusion devices | |
| WO2016124045A1 (en) | Memory alloy auto-distraction locking type interbody fusion cage and application method therefor | |
| CN103561690A (en) | Fusion cage with in-line single piece fixation | |
| JP2016512094A (en) | Pedicle screw with reverse spiral cut and method | |
| JP2008534063A (en) | Minimally invasive spinal recovery system, apparatus, method and kit | |
| CN208541441U (en) | Adjustable artificial vertebral body | |
| CN102579120A (en) | Full built-in expandable anterior spinal fixation system | |
| CN109481101B (en) | Anterior cervical self-fixing artificial vertebral body | |
| Attabib et al. | Use of fenestrated aneurysm clips in microvascular decompression surgery: technical note and case series | |
| CN109350208A (en) | A kind of titanium alloy bone grafting bed apparatus for centrum rear | |
| US10327819B2 (en) | Bone screw | |
| US20080269899A1 (en) | Allograft anterior cervical plating system | |
| CN208243665U (en) | One kind can strut type Invasive lumbar fusion device | |
| CN105943203B (en) | Comprehensive adjustable intervertebral fixes fusion device | |
| CN106308916B (en) | Artificial vertebral body fixed system | |
| CN208823063U (en) | A kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device | |
| CN204379491U (en) | A kind of lumbosacral spine axially merges inner fixing device | |
| CN209301406U (en) | Atlas and axis Lateral mass joint fixes fusing device | |
| CN107432764B (en) | Anterior cervical vertebrae controllably moves forward instrument | |
| CN101612070B (en) | Open type memory alloy artificial vertebral body | |
| CN213249622U (en) | Visual intelligent torque wrench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |